(compile -X numbers-syntax -emit-type-file siphash.types -sJ -O3 -d0 siphash-chicken.scm -o siphash.so)
(compile -unit siphash -uses numbers -X numbers-syntax -cJ -O3 -d0 siphash-chicken.scm -o siphash.o)
(compile -s -O3 -d0 siphash.import.scm)
(install-extension 'siphash
  '("siphash.so" "siphash.import.so" "siphash.o" "siphash.types")
  '((version "0.0.3")))